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发明名称
Folding grandstand
摘要
申请公布号
US1964612(A)
申请公布日期
1934.06.26
申请号
US19320640709
申请日期
1932.11.01
申请人
WETZEL CHARLES H
发明人
WETZEL CHARLES H.
分类号
E04H3/12
主分类号
E04H3/12
代理机构
代理人
主权项
地址
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